<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>第65个CSS页面</title>
    <style>
        div {
            width:200px;
            height: 100px;
            border: 1px dashed red;
        }

        #div1 {
            float: left;
            background-color: green;
        }

        #div2 {
            background-color: blue;
        }


    </style>
</head>
<body>

<div id="div1">

</div>

<div id="div2">
</div>

<div>
</div>


</body>
</html>